0,0 → 1,53 |
/* Copyright (C) 1994 DJ Delorie, see COPYING.DJ for details */ |
/* w_atanhf.c -- float version of w_atanh.c. |
* Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com. |
*/ |
|
/* |
* ==================================================== |
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. |
* |
* Developed at SunPro, a Sun Microsystems, Inc. business. |
* Permission to use, copy, modify, and distribute this |
* software is freely granted, provided that this notice |
* is preserved. |
* ==================================================== |
*/ |
|
#if defined(LIBM_SCCS) && !defined(lint) |
static char rcsid[] = "$Id: w_atanhf.c,v 1.1 1994/08/10 20:33:48 jtc Exp $"; |
#endif |
|
/* |
* wrapper atanhf(x) |
*/ |
|
#include "math.h" |
#include "math_private.h" |
|
|
#ifdef __STDC__ |
float atanhf(float x) /* wrapper atanhf */ |
#else |
float atanhf(x) /* wrapper atanhf */ |
float x; |
#endif |
{ |
#ifdef _IEEE_LIBM |
return __ieee754_atanhf(x); |
#else |
float z,y; |
z = __ieee754_atanhf(x); |
if(_LIB_VERSION == _IEEE_ || isnanf(x)) return z; |
y = fabsf(x); |
if(y>=(float)1.0) { |
if(y>(float)1.0) |
/* atanhf(|x|>1) */ |
return (float)__kernel_standard((double)x,(double)x,130); |
else |
/* atanhf(|x|==1) */ |
return (float)__kernel_standard((double)x,(double)x,131); |
} else |
return z; |
#endif |
} |